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G10 FR4 Fiberglass Insulation Sheet – 335x300mm Epoxy Board for CNC & Electrical Use

G10 FR4 Fiberglass Insulation Sheet – 335x300mm Epoxy Board for CNC & Electrical Use

3000 in stock

Regular price $28.44 USD
Sale price $28.44 USD Regular price
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👀We use free standard shipping by default, customers don't need to pay shipping fee, product details please click below 🔘【Description】 page to view.

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Estimated delivery: 12-26 days (Standard delivery (free shipping by default)), 3-6 days (Expedited delivery 「Expedited delivery fee required」).

Returnable within 35 days of purchase for quality issues. Duties and taxes are non-refundable.

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Description

G10 FR4 Glass Fiber Sheet – 335×300mm (13.2" × 11.8")

Flame Retardant | Electrical Insulation | CNC Machinable | Custom Sizes Available


Unlock Precision and Protection with G10 FR4 Fiberglass Sheets

Our high-quality G10 FR4 glass fiber sheet is engineered for demanding industrial, electrical, and mechanical applications. Made from durable epoxy resin reinforced with woven fiberglass, this sheet offers excellent flame retardancy, high mechanical strength, and outstanding electrical insulation properties.

Whether you're fabricating custom insulating components or need reliable backing plates for high-voltage systems, this fiberglass laminate sheet is designed to deliver.

Available in Light Green, Black, and Yellow – each panel measures 335mm × 300mm (13.2" × 11.8") with multiple thickness options ranging from 0.5mm (0.02") to 5mm (3/16").


🧩 Key Features & Benefits

Feature Advantage Benefit to You
G10 FR4 Epoxy Laminate Heat & flame resistant (up to 200°C) Protects your equipment in high-temperature environments
Excellent Electrical Insulation Dielectric strength >18kV/mm Ideal for transformers, motors, PCB insulation
Precision Cut CNC, laser, engraving supported No edge fray, ideal for prototyping or high-tolerance parts
Multi-color options Light Green / Black / Yellow Easy color coding for system identification
Wide Thickness Range 0.5mm to 5mm (0.02" to 3/16") Covers everything from thin spacers to structural panels
Custom Sizes Available Based on drawings or specifications Tailored to your project, no material waste
Eco-Conscious Material RoHS & CE certified Safe for both you and your environment

📐 Technical Specifications

Property Value
Product Type G10 / FR4 Epoxy Resin Board
Material Fiberglass Epoxy Laminate
Size (L × W) 335mm × 300mm (13.2" × 11.8")
Thickness Options 0.5mm (0.02") to 5mm (3/16")
Available Colors Light Green, Black, Yellow
Temperature Resistance 150–200°C
Flame Retardancy UL94-V0
Dielectric Strength >18kV/mm
Density ~1.85 g/cm³
Surface Finish Smooth CNC-milled
Machinability CNC milling, laser engraving
Certifications CE, RoHS

🛠 Applications

  • Electrical insulation partitions and backing plates

  • PCB backing boards & FPC reinforcement

  • Motor and transformer insulation

  • Precision gaskets and flame-resistant barriers

  • Custom CNC machined jigs, spacers, fixtures

  • Lithium battery insulation and high-voltage isolation

  • Potentiometer and carbon film printing baseboards


✨ Why Choose BeePlastic?

✔ Wide Plastic Selection
We offer not just G10, but hundreds of engineering plastics in sheets, rods, and custom forms.

✔ Precision Customization
Laser cutting, CNC engraving, UV printing, and full drawing-based production – we help you build exactly what you need.

✔ Dedicated to Your Budget
We understand cost matters – that’s why we minimize waste, recommend alternatives when available, and support free standard shipping to help you reduce total spending.

✔ Trusted by Engineers Worldwide
With 15+ years of material service experience, we're your partner in every custom build or mass production run.


🔧 Customization Process

  1. Send us your drawing or specs (PDF, CAD, Sketch ok)

  2. We confirm feasibility and quote within 24h

  3. Free standard shipping included for eligible orders

  4. Fast production with CNC/lasing precision

  5. Ongoing support for revisions, duplicates, or scaled production

👉 Need a custom shape or thickness? Contact us now or upload your drawing via our Contact Page.


❓ Frequently Asked Questions (FAQ)

Q1: Is this G10 sheet suitable for high-voltage electrical insulation?
Yes. It offers excellent dielectric strength (>18kV/mm) and UL94-V0 flame retardancy – perfect for transformers, PCBs, and motor insulation.

Q2: Can I cut the sheet at home?
You can cut thinner versions with saws or rotary tools, but for clean and precise edges, we recommend CNC or laser cutting – which we can do for you.

Q3: Are custom thicknesses available beyond 5mm?
Yes. We can supply thicknesses up to 50mm on request – just send your requirements.

Q4: Will there be surface marks or scratches?
Minor marks from cutting or handling are possible. For appearance-critical projects, let us know – we offer polishing and protective film services.


✅ Choose Your Size & Color Now

🟢 Ready to ship standard panels in Light Green, Black, or Yellow
📏 Thicknesses: 0.5mm (0.02") – 5mm (3/16")
🔧 Need custom shape or holes? We support full machining & engraving
🛒 Add to Cart or Request a Quote today!

Why Choose Us

Your Strategic Partner for High-Performance Plastic Manufacturing & Supply

In industries where performance, reliability, and precision are paramount, your choice of a manufacturing partner is a critical decision. For over 15 years, BeePlastic has been the trusted source for engineers and procurement managers who require flawless execution, from complex custom components to a reliable supply of high-grade raw materials.

An extensive range of engineering and high-performance plastic stock shapes including rods, sheets, and bars.

Engineered for Partnership: How We De-Risk Your Supply Chain

We understand that our role is to provide certainty. Our entire operation is built on a foundation of rigorous processes designed to deliver predictable excellence and give you peace of mind.

A Collaborative Approach

We begin every partnership by becoming an extension of your team. Our mandatory Tri-Departmental DFM (Design for Manufacturability) Summit ensures that your design is not just manufacturable, but optimized for performance, cost, and longevity. This proactive, consultative process, involving our engineering, production, and service leaders, is our upfront investment in your project's success.

The BeePlastic engineering team collaborating on a custom plastic processing solution.

A Commitment to Quality

Precision is not a goal; it's our baseline. We hold a standard tolerance of ±0.03mm (±0.0012") on our CNC machined components. This unwavering commitment to quality is verified through stringent, multi-point inspections. For you, this means reduced assembly friction, predictable performance, and the confidence that every part is a perfect replica of your design.

A BeePlastic quality assurance specialist conducting a detailed inspection on a machined part.

A Complete Manufacturing Ecosystem

We provide a comprehensive suite of in-house manufacturing capabilities, allowing you to streamline your supply chain and ensure consistent quality from a single, trusted partner.

Precision CNC Plastic Machining

As the cornerstone of our operation, we utilize advanced 3, 4, and 5-axis CNC mills and lathes to produce parts with intricate geometries and tight tolerances. From high-performance materials like PEEK and PTFE to engineering plastics like Nylon and Acetal, our experienced machinists and calibrated equipment deliver unparalleled accuracy and surface finish.

Explore Our CNC Capabilities →
A state-of-the-art CNC machine in operation at the BeePlastic facility.
A collage of successful custom plastic fabrication projects and case studies.

Custom Plastic Fabrication & Assembly

Our capabilities extend far beyond machining. Our skilled fabrication department provides a range of value-added services, including heat bending, plastic welding, chemical bonding, and complex assembly. This allows us to deliver not just components, but complete, fully integrated solutions ready for immediate implementation in your product line.

See Our Fabrication Case Studies →

Additional Services & Modern Processes

To support every stage of your product's lifecycle, we also offer scalable injection molding for high-volume production, high-detail laser cutting and engraving for materials like Acrylic, and precision cut-to-size services for raw material preparation.

An icon representing BeePlastic's commitment to modern and sustainable manufacturing processes.

The Engineer's Material Science Hub

Selecting the optimal material is one of the most critical decisions in product design. This comprehensive guide serves as an authoritative resource for you to compare our inventory of over 22 engineering and high-performance plastics. Our team is always available to provide expert consultation to ensure you make the perfect choice for your application's mechanical, thermal, and chemical requirements.

Material (Click to Explore) Common Applications Key Performance Properties BeePlastic Machining & Fabrication Insights
ABS Automotive dashboards, electronic housings Good impact resistance & toughness, easy to machine Highly versatile and cost-effective. Ideal for prototypes and aesthetic parts.
Acrylic Point-of-sale displays, lenses, light guides Excellent optical clarity, UV resistant Perfect for laser cutting to achieve polished edges. We machine for precision optics.
Bakelite (Phenolic) Electrical insulators, terminal boards, jigs Superior electrical insulation, high rigidity, heat resistant We use specific tooling to prevent chipping, delivering smooth, precise insulating components.
FR-4 / G-10 PCBs, insulators, high-strength structural parts High mechanical strength, flame retardant (FR-4), low moisture absorption Our expertise prevents delamination while machining these abrasive materials.
HDPE Piping systems, cutting boards, chemical tanks Excellent chemical resistance, high strength-to-density ratio, FDA grades Ideal for cost-effective, robust parts. We achieve clean cuts with proper tooling.
Nylon (PA) Gears, bearings, rollers, automotive parts High mechanical strength, good wear resistance Excellent for durable, load-bearing parts. We can advise on managing moisture absorption.
PAI High-performance seals, bearings, aerospace parts Exceptional strength & stiffness at high temperatures Requires robust tooling. Our experience minimizes part stress and ensures accuracy.
PC (Polycarbonate) Safety glasses, machine guards, electronic housings Extremely high impact resistance, good clarity We machine PC to be robust and clear. Stress relief annealing is performed when required.
PEEK Aerospace parts, medical implants, semiconductor parts Exceptional high-temp & chemical resistance, biocompatible grades A core specialty. Our proven processes achieve critical precision on PEEK components.
PEI Medical components, aircraft interior parts High strength at elevated temps, flame retardancy Ideal for sterilizable parts. We manage specific annealing requirements for stress relief.
PET Beverage bottles, food containers, machine guards High strength & stiffness, excellent clarity (PETG) We ensure optimal clarity in machined PETG parts, which offer better impact resistance than Acrylic.
PI (Polyimide) Aerospace components, high-temp insulators Outstanding high-temperature performance Demands specialized techniques due to hardness & abrasiveness. We ensure tight tolerances.
POM (Acetal) Precision gears, bearings, fuel system components High stiffness, low friction, excellent dimensional stability One of the most machinable plastics. We stock various grades for your specific needs.
PP (Polypropylene) Packaging, automotive components, living hinges Excellent chemical resistance, low density, weldable A versatile choice for injection molding and CNC machining in cost-sensitive applications.
PPS Automotive under-hood, pump & valve parts Excellent high-temp & chemical resistance Challenging to machine due to its abrasive nature. We use appropriate tooling.
PTFE Non-stick coatings, seals, gaskets, chemical liners Extremely low friction, outstanding chemical inertness We employ specialized tooling and techniques (like etching for bonding) to achieve results.
PU (Polyurethane) Seals, gaskets, wheels, shock absorbers Wide range of hardness, excellent abrasion resistance Machinability varies with type. We have experience with various forms for custom parts.
PVC Pipes & fittings, window frames, chemical tanks Good chemical resistance, durable, cost-effective Rigid PVC machines well. We can advise on the appropriate grade for your application.
PVDF High-purity fluid handling, chemical equipment Excellent chemical resistance (especially to halogens), UV resistant We ensure no contamination when processing for high-purity applications.
Silicone Rubber Seals, gaskets, O-rings, medical tubing, keypads Excellent thermal stability, flexible at low temps, biocompatible Expertise in silicone molding (LSR, compression), die-cutting, and custom compounding.
UHMW-PE Conveyor components, wear strips, food equipment Exceptional abrasion resistance, low coefficient of friction We optimize cutting speeds and use sharp tooling to achieve smooth finishes and prevent melting.

Let's Build Your Next Great Component

Your project deserves a partner dedicated to precision, quality, and proactive communication. Contact our engineering team today to get a detailed, no-obligation quote and discover the BeePlastic difference.


A BeePlastic engineer inspecting a finished component, representing quality and expertise.

"BeePlastic provided exceptional custom solutions. Their professionalism and quality are unmatched."
- Satisfied Industrial Client

Free shipping & Returns
Reviews

01 💭When can I ship my order? 🧠What logistics channels do you use? 💡What are the logistics fees?


💭A: Regular specifications are usually shipped within 48 hours; customized orders depending on the complexity of processing, usually 3~7 days.

🧠A: We use standard distribution logistics for free shipping (usually takes 15~25 days), if you use expedited shipping with multiple logistics (DHL, FedEx, UPS, EMS, FS, etc.), you can choose the most suitable way according to your location and needs. If you need expedited, please contact us to confirm!

💡A: We use our standard delivery logistics by default, no freight charge for standard delivery, if you need fast delivery, you need to contact us for confirmation and charge the freight with the actual quotation of the logistics provider, the specific cost needs to be provided with the receiving address and confirmed with the logistics provider and sent to the customer.

02 💡Can I return or exchange an item?🧠 How do I request a return?


💡A: For regular in-stock products, they can be returned or exchanged within 7 days after receipt (need to keep in good condition). Customized processed or plastic material cut products can not be sold twice, unless quality problem, generally do not support return or exchange.

🧠A: If quality problem, please contact us first by email and provide order number, we will give return address and process. The shipping cost will be borne by the buyer, except for quality issues.

03 💡What payment methods are supported? 🧠What if I can't pay? 💭Can I get a discount for large orders?


💡A: PayPal and bank transfer are the main payment methods on our website. If you need other methods, please contact our customer service.

🧠A: If you are unable to pay or need other ways, please communicate with our customer service, you can submit a contact form to our [Contact us] page or click on the right side of the real-time chat window to leave a message.

💭A: Large orders have corresponding discounts, you can directly communicate with our customer service.

04 💭Can't find the size I need, what custom machining do you offer? 💡What are the MOQ requirements?

💭A: We can cut to specified lengths, thicknesses, diameters, and also do preliminary CNC/lathe machining. Please see the customization page or contact us for details.

💡A: There is no minimum order for regular materials. For CNC or special processing, there may be a certain MOQ requirement; please contact us for details.

05 💭How can I track my order?


💭A: You will receive a confirmation email after placing an order, and the waybill number will be attached after shipment; you can also check the logistics news on the “My Orders” page, or enter the waybill number into [https://www.17track.net/] for inquiry.

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